How to mount rice paper for Chang Dai-chien's pouring ink technique

I will be teaching a live Zoom class about the pouring ink technique of master Chang Daichien(Zhang Daqian) on March 3rd, 2021.
Watch how he painted:    • Zhang Daqian (Chang Daichien ) Pouring Ink...  
I repeatedly watched the documentary of Zhang Daqian's innovative landscape painting "Mountain Pass Dwellings": First, he used a large brush to paint with lean water on Semi-sized rice paper a brief sketch of mountain shape with ups and downs, and then used a large brush to guide ink while the paper was damp. Following the creative conception in his mind, he poured the ink directly from the ink palette onto the paper...In an instant, a majestic mountain stood on the paper. Then, he used a small brush dipped in clear water to break the edge of the foot of the mountain to lighten it and connect it with the thick ink.
Zhang Daqian first used clear water to paint the invisible "painting", which is to pave the way for the next step of splashing ink. So, the "splashing ink" is actually "ink breaking into water". After the main mountain dries a little, he uses the method of "color breaking ink" to repeatedly wash, drip, and sprinkle mineral green and mineral blue on the dark ink, i.e., "breaking ink into water", and "splash color to break ink". Immediately afterwards, he used indigo to break the hard lines of the mineral colors...At this time, the visual melody of water, color, and ink superimposed in harmony, interlaced flashing, and flowing sound is already present on the paper. The thickness of the mineral colors changed the hue on ink bases. The thicker the mineral color, the more gorgeous the hue; on the contrary, the thinner the color the deeper the hue.
Both color and ink are passive players, and the coach who really deploys them is water. Water is a magician. Techniques such as the amount of water used and the speed of brush strokes can make the picture ever-changing, endless, and even transform into unpredictable and unimaginable accidental effects. This is the abstract artistic conception produced by Zhang Daqian's method of breaking ink and splashing color.
Zhang Daqian said that "splashing ink is easy, but breaking ink is difficult." The difficulty lies in the fact that this method is between controllable and uncontrollable, inevitable, and accidental. Relying on his talent and experience, he skillfully leads the "uncontrollable" with "controllable", leads to the contingency by necessity, and finally makes the work balanced with contradictions, mystery, and credibility.
To sum up: the breaking method leads the pouring process, and pouring is within the breaking; to break it again after pouring, and to pour again after breaking; its yin and yang against each other; the density vs. scattered, the concentrated vs. disbursed; the emptiness and fullness, dark vs light...It is all about the precious philosophy of the great Tao. "Use color to break ink", this is the essence of Zhang Daqian's bold innovation, an unprecedented skill.
What Mr. Zhang Daqian said, "At the age of sixty, I suddenly got a stroked with my eyes, and looked at everything blurry. I could no longer deliberately work. So, I had to reduce the brushstrokes and using break the ink. The world thinks it was my innovation...The method of breaking ink is the tradition of our country, which is not used by people for a long time ". Zhang Daqian, who had severe eye problems and was once blind in his left eye, enters the stage of "learning from the heart" with his extraordinary memory and imagination and uses the new method of "breaking ink and splashing color" to transform nostalgia and dreamland into mountain and water paintings. Many exquisite works have been handed down, leaving a large amount of precious cultural and artistic heritage and rich spiritual wealth for future generations.
Although the method of "breaking ink and splashing ink" was reportedly created by Wang Qia of Tang Dynasty, it did not leave any real traces. The method of "breaking ink and splashing color" is a major achievement of Mr. Zhang Daqian to carry forward the past and bring forth the new. It is a great contribution to the quintessence of Chinese painting.